/**
 *
 */
package com.btcode.common;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.multipart.FilePart;
import org.apache.commons.httpclient.methods.multipart.MultipartRequestEntity;
import org.apache.commons.httpclient.methods.multipart.Part;
import org.apache.commons.httpclient.methods.multipart.StringPart;

/**
 * @author Administrator
 */
public class FileUtil {

    public static final int BUFFER = 1024;//缓存大小

    /**
     * zip file lrq 2012-9-11 TODO
     *
     * @param filePath the dir to zip
     * @param resultPath the result zip file name
     */
    public static void zipFile(String filePath, String resultPath) throws Exception {
        File fileDir = new File(filePath);
        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(resultPath));
        File[] files = fileDir.listFiles();
        if (files != null) {
            for (int i = 0; i < files.length; i++) {
                //进行递归，同时传递父文件ZipEntry的名称，还有压缩输出流
                recursiveZip(files[i], "", zos);
            }
        }
        zos.close();
    }

    private static void recursiveZip(File fdir, String pname, ZipOutputStream zos)
        throws IOException {
        if (fdir.isDirectory()) {
            //如果为目录，ZipEntry名称的尾部应该以反斜杠"/"结尾
            zos.putNextEntry(new ZipEntry(pname + fdir.getName() + "/"));
            File[] files = fdir.listFiles();
            if (files != null) {
                for (int i = 0; i < files.length; i++) {
                    //进行递归，同时传递父文件ZipEntry的名称，还有压缩输出流
                    recursiveZip(files[i], pname + fdir.getName() + "/", zos);
                }
            }
        }
        if (fdir.isFile()) {
            byte[] bt = new byte[BUFFER];
            ZipEntry ze = new ZipEntry(pname + fdir.getName());
            //设置压缩前的文件大小
            ze.setSize(fdir.length());
            zos.putNextEntry(ze);
            FileInputStream fis = new FileInputStream(fdir);
            int i = 0;
            while ((i = fis.read(bt)) != -1) {
                zos.write(bt, 0, i);
            }
            fis.close();
        }
    }

    @SuppressWarnings("resource")
    public static void upZipFile(String zipfile, String dir) throws Exception {
        ZipFile zfile = new ZipFile(zipfile);
        @SuppressWarnings("rawtypes") Enumeration zList = zfile.entries();
        ZipEntry ze = null;
        byte[] buf = new byte[1024];
        File temzipFile = new File(zipfile);
        String zipName = temzipFile.getName();
        File zipdir = new File(dir + "/" + zipName.substring(0, zipName.lastIndexOf(".")));
        if (!zipdir.mkdir()) {
            throw new Exception(zipdir.getPath() + "已存在");
        }
        while (zList.hasMoreElements()) {
            ze = (ZipEntry) zList.nextElement();
            OutputStream os = new BufferedOutputStream(
                new FileOutputStream(zipdir.getPath() + "/" + ze.getName()));
            InputStream is = new BufferedInputStream(zfile.getInputStream(ze));
            int readLen = 0;
            while ((readLen = is.read(buf, 0, 1024)) != -1) {
                os.write(buf, 0, readLen);
            }
            is.close();
            os.close();
        }
        zfile.close();
    }

    public static String uploadFile(String targetURL, String filename)
        throws HttpException, IOException {
        return uploadFile(targetURL, filename, "");
    }

    public static String uploadFile(String targetURL, String filename, String receiveFolder)
        throws HttpException, IOException {
        File targetFile = null;
        targetFile = new File(filename);
        PostMethod filePost = new PostMethod(targetURL);
        Part[] parts = {
            new FilePart("file", targetFile), new StringPart("receiveFolder", receiveFolder)
        };
        filePost.setRequestEntity(new MultipartRequestEntity(parts, filePost.getParams()));
        HttpClient client = new HttpClient();
        client.getHttpConnectionManager().getParams().setConnectionTimeout(5000);
        int status = client.executeMethod(filePost);
        String responText = filePost.getResponseBodyAsString();
        filePost.releaseConnection();
        return "http状态码：" + status + "/n" + responText;
    }


    /**
     * 新建目录
     *
     * @param folderPath String 如 c:/fqf
     * @return boolean
     */
    public static void newFolder(String folderPath) {
        try {
            String filePath = folderPath;
            filePath = filePath.toString();
            java.io.File myFilePath = new java.io.File(filePath);
            if (!myFilePath.exists()) {
                if(myFilePath.mkdir()){
                    throw new Exception("新建文件夹失败："+filePath);
                }
            }
        }
        catch (Exception e) {
            System.out.println("新建目录操作出错");
            e.printStackTrace();
        }
    }

    /**
     * 删除文件
     *
     * @param filePathAndName String 文件路径及名称 如c:/fqf.txt
     * @param fileContent String
     * @return boolean
     */
    public static void delFile(String filePathAndName) {
        try {
            String filePath = filePathAndName;
            filePath = filePath.toString();
            java.io.File myDelFile = new java.io.File(filePath);
            myDelFile.delete();

        }
        catch (Exception e) {
            System.out.println("删除文件操作出错");
            e.printStackTrace();

        }

    }

    /**
     * 删除文件夹
     *
     * @param folderPath String
     * @return boolean
     */
    public static void delFolder(String folderPath) {
        try {
            delAllFile(folderPath); //删除完里面所有内容
            String filePath = folderPath;
            java.io.File myFilePath = new java.io.File(filePath);
            if(myFilePath.delete()){
                throw new Exception("删除文件失败：" + filePath);
            }
        }
        catch (Exception e) {
            System.out.println("删除文件夹操作出错");
            e.printStackTrace();

        }

    }

    /**
     * 删除文件夹里面的所有文件
     *
     * @param path String 文件夹路径 如 c:/fqf
     */
    public static void delAllFile(String path) {
        File file = new File(path);
        if (!file.exists()) {
            return;
        }
        if (!file.isDirectory()) {
            return;
        }
        String[] tempList = file.list();
        if(tempList == null){
            return;
        }
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
            if (path.endsWith(File.separator)) {
                temp = new File(path + tempList[i]);
            }
            else {
                temp = new File(path + File.separator + tempList[i]);
            }
            if (temp.isFile()) {
                temp.delete();
            }
            if (temp.isDirectory()) {
                delAllFile(path + "/" + tempList[i]);//先删除文件夹里面的文件
                delFolder(path + "/" + tempList[i]);//再删除空文件夹
            }
        }
    }

    /**
     * 复制单个文件
     *
     * @param oldPath String 原文件路径 如：c:/fqf.txt
     * @param newPath String 复制后路径 如：f:/fqf.txt
     * @return boolean
     */
    public static void copyFile(String oldPath, String newPath) {
        try {
            int bytesum = 0;
            int byteread = 0;
            File oldfile = new File(oldPath);
            if (oldfile.exists()) { //文件存在时
                InputStream inStream = new FileInputStream(oldPath); //读入原文件
                FileOutputStream fs = new FileOutputStream(newPath);
                byte[] buffer = new byte[1444];
                while ((byteread = inStream.read(buffer)) != -1) {
                    bytesum += byteread; //字节数 文件大小
                    System.out.println(bytesum);
                    fs.write(buffer, 0, byteread);
                }
                fs.close();
                inStream.close();
            }
        }
        catch (Exception e) {
            System.out.println("复制单个文件操作出错");
            e.printStackTrace();

        }

    }

    /**
     * 复制整个文件夹内容
     *
     * @param oldPath String 原文件路径 如：c:/fqf
     * @param newPath String 复制后路径 如：f:/fqf/ff
     * @return boolean
     */
    public static void copyFolder(String oldPath, String newPath) {

        try {
            (new File(newPath)).mkdirs(); //如果文件夹不存在 则建立新文件夹
            File a = new File(oldPath);
            String[] file = a.list();
            if(file == null){
                return;
            }
            File temp = null;
            for (int i = 0; i < file.length; i++) {
                if (oldPath.endsWith(File.separator)) {
                    temp = new File(oldPath + file[i]);
                }
                else {
                    temp = new File(oldPath + File.separator + file[i]);
                }

                if (temp.isFile()) {
                    FileInputStream input = new FileInputStream(temp);
                    FileOutputStream output = new FileOutputStream(
                        newPath + "/" + (temp.getName()).toString());
                    byte[] b = new byte[1024 * 5];
                    int len;
                    while ((len = input.read(b)) != -1) {
                        output.write(b, 0, len);
                    }
                    output.flush();
                    output.close();
                    input.close();
                }
                if (temp.isDirectory()) {//如果是子文件夹
                    copyFolder(oldPath + "/" + file[i], newPath + "/" + file[i]);
                }
            }
        }
        catch (Exception e) {
            System.out.println("复制整个文件夹内容操作出错");
            e.printStackTrace();

        }

    }

    /**
     * 移动文件到指定目录
     *
     * @param oldPath String 如：c:/fqf.txt
     * @param newPath String 如：d:/fqf.txt
     */
    public static void moveFile(String oldPath, String newPath) {
        copyFile(oldPath, newPath);
        delFile(oldPath);

    }

    /**
     * 移动文件到指定目录
     *
     * @param oldPath String 如：c:/fqf.txt
     * @param newPath String 如：d:/fqf.txt
     */
    public static void moveFolder(String oldPath, String newPath) {
        copyFolder(oldPath, newPath);
        delFolder(oldPath);

    }

}
